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The Journal of Sports Medicine and Physical Fitness 2021 Apr 19

DOI: 10.23736/S0022-4707.21.12049-3

Copyright © 2021 EDIZIONI MINERVA MEDICA

lingua: Inglese

Comparison of traditional and accommodating resistance training with chains on muscular adaptations in young men

Hamid ARAZI 1 , Majid MOHAMMADI 2, Abbas ASADI 3, João P. NUNES 4, G. Gregory HAFF 5

1 Department of Exercise Physiology, Faculty of Sport Sciences, University of Guilan, Rasht, Iran; 2 Department of Physical Education, Rasht Branch, Islamic Azad University, Rasht, Iran; 3 Department of Physical Education and Sport Sciences, Payame Noor University, Tehran, Iran; 4 Metabolism, Nutrition, and Exercise Laboratory, Physical Education and Sport Center, Londrina State University, Londrina, Brazil; 5 School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia


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BACKGROUND: Providing accommodating resistance with the use of chains (CRT) is a programming technique that may enhance muscle size, strength, and power. However, there is a paucity of studies comparing the responses to CRT and traditional resistance training (TRT) approaches. This study aimed to examine the effects of 8 weeks of CRT and TRT on muscular adaptations in young recreationally-trained men.
METHODS: Thirty men (26 ± 4 y) volunteered to participate in the present study and were randomly assigned to either CRT (n = 10), TRT (n = 10), or a non-exercise control group (CG, n = 10). A resistancetraining program (3-4 sets, ~8-12 repetitions at 65-80% of 1RM) was performed three times a week for 8 weeks. Percentage body fat, arm and thigh circumferences, 1RM and endurance (number of repetitions to failure 60% of 1RM) strength tests in the back squat and bench press exercises, and vertical jump power were assessed before and after the intervention.
RESULTS: Following the intervention, both training groups demonstrated improvements in strength compared to CG, where greater gains were observed for CRT (e.g., bench press 1RM: CRT=28%; TRT=19% / back squat endurance: CRT=8%; TRT=2%).
CONCLUSIONS: The use of chains during resistance training may promote greater gains in strength in young men.


KEY WORDS: Strength training; Performance; Variable resistance; Hypertrophy

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